Jaysun is a distinctive boys' name in United States, ranking #9935 in 1997 with 5 recorded births. The name reached its all-time peak in 2002 with 12 births ranking #5875. Since 1996, the popularity has decreased by 28.6%. In 1997, approximately 1 in every 377,018 boys born was named Jaysun. FALLING Recent data shows the name is currently falling.